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Official data from INPI

MÉTODO PARA CONVERSÃO DE POLICAPROLACTAMA PARA ÁCIDO ADÍPICO, MÉTODO PARA CONVERSÃO DE POLIHEXAMETILENO ADIPAMIDA PARA ÁCIDO ADÍPICO E MÉTODO PARA CONVERSÃO DE UMA MISTURA DE POLICAPROLACTMA E POLIHEXAMETILENO ADIPAMIDA PARA ÁCIDO ADÍPICO

Arquivada/ExtintaInvention PatentPCT · US1995011776

Application data

Number

PI9509204

Type

Invention Patent

Filing

09/22/1995

Publication

01/27/1998

PCT

US1995011776

Progress at the INPI

  1. Filing09/22/95
  2. Publication01/27/98
  3. Examination
  4. Allowance04/09/02
  5. Grant05/13/03
  6. Expired12/01/15

The letters patent expired on 12/01/2015: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 12/01/2015. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

E. I. du Pont de Nemours and Company

US

I. S. (pessoa física)

US

See this company's full portfolio

Inventors

E. J. (pessoa física)

US

R. M. (pessoa física)

US

Technical data

Priority claims

US

08/314,744 · 09/29/1994

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 22/09/2015

12/01/2015

RPI 2343

Transferência deferida

#25.1

Transferido de: E.I. DuPont de Nemours and Company

05/30/2006

RPI 1847

Concessão da patente

#16.1

05/13/2003

RPI 1688

Deferimento

#9.1

04/09/2002

RPI 1631

Notificação de entrada na fase nacional - PCT

#1.3

01/27/1998

RPI 1414

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